Nurse-led BBTI for Improving Insomnia Severity

On the arrival for the baseline appointment, participants will receive workbooks which include an outline and content of BBTi, sleep diaries, and adherence record. In the end of weeks 1 and 3, nurse interventionist will meet participants to review their sleep diary data and negotiate their bedtime and wake-time schedule. During the weeks 2 and 4, participants will receive planned follow-up phone calls to assess their adherence and review progress and challenges.